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Assuming you have a front wheel drive LaSabre, this type of noise is typical with worn out wheel bearings on the rear of the vehicle or the emergency brakes are dragging. This issue is common on vehicles more than 15 years old as the emergency brake sometimes corrodes and can cause the pads to stick to the rotor; which can cause this noise. You should contact a professional mobile mechanic to complete a car is making a noise from the rear of the vehicle inspection.

Q: Back firing

If you were working around the distributor and loosened and re-tightened it you might have set the timing wrong. Specifically, delayed or retarded timing causes backfiring as the spark occurs too late and so part of the air fuel charge...

Q: Q: Reduced engine power

Hello there, many common problems will cause your 2009 Buick Terraza to have a loss of engine power. The most common would be spark plugs, fuel pump, coil, fuel injectors, MAF sensor, vacuum leak, oxygen sensors, or a wiring harness...